Car-heating system.



T. PARKER. GAR HEATING SYSTEM. APPLIOATION FILED MAY13, 1907.

Patented June 1, 1909.

R am Wm mm m MAW UNKTED dlllrifiilllhl m v rimir THOMAS PARKER, OF LONDON, ONTARIO, CANADA.

CAR-HEATING SYSTEEYII.

Specification of Letters Patent.

Patented June 1, 12 309.

Application filed May 18, 1907. Serial No. 373,3-2'2.

' in Car-Heating, Systems, of which the following is a specification, reference being had therein to the accompanying drawings. The invention relates generally to a heatmg System for railway cars, and particularly to a dri less heating apparatus whereinthe water 0 condensation is'retained within the radiator and heated by the steam, forming substantially a combined steam and hot water system.

The invention. consists in the novel construction of the, heating apparatus, and fur the? in the eculiar arrangement and comhination of t e various parts, as Will be more fully hereinafter set forth.

In the drawings, Figural is a view in elevation, partly broken away, of a heating system em odying my invention; and 2 18 an enlarged vertical central section through the valves, showing a modified form of valve for the connecting pipe or conduit.

' In the drawings thus briefly described, A

represents the referred form or radiator em- 30 loyed in a re way passenger car, the piping be ng arranged in a vertical lane and inclined downwardly to drain t e condense: tion.

B represents a steam supply pipe having communication with the usual train pipe (not shown), and with the radiator near its lowest point,-as plainly indicated in Fig. 1. C is a valve'for controlling the supply pipe, and D is a drip or discharge pipe preferably communicating with the radiator at a point in roximity to the su ply pipe, and contro led by a suitable vs vs preferably of the globe type, as E.

F represents'a connecting pipc intermodiate the supply and discharge pipes, and

forming a part of. the radiator circuit, the radiator in this instance being a closed loop, and G is a suitable valve,prcl'erably of the lobe type,for the connection F control- .ing the discharge thercthrough.

- Means preferably in the'i'orin of a check valve are employed for preventing the exit of the condensation, and as a matter of convenienoe and to simplify the construction I reierably'locate the check in the valve casing of the supply pipe, as shown in Fig.1, so

that a single device will serve the retain ing means for the entire radiator. i

The valve C controlling the supply pipe has its main stem g provided with s sot-list; (Z

which receives an auxiliary stein AZ" carrying the check-valve c adapted to be positively seated by the stem y when the steam supply to be cut oil.

in practice, the air and any condensation that is in the radiator is first driven out and the radiator filled with steam. T his is accomplished after a steam supply is provided, by opening the valves in the supply and discharge pipes closing; the valve G in the portion oi the radiator circuit,naniel the pipe section F,-interinediatc the suppiy and discharge valves. charge p then closed, the valve G in the pipe opened, thus providing a closed radiator circuit, the steam being adapted pass from supply pipe into the radiat r in both directions.

The condensation is retained within the radiator ivy the check-valve g, which remains seated until the steam pressure within the radiator is less (due to condensation) t ian the supply, when the check is opcratedcnd live steam injected within the water, thus heating it and replacing the condensation. As soon as the steam pressure is equalized, the check-valve again seats, the valve opening and closing automatically as the pressure varies, but serving at all times to retain the condensation in the radiator circuit.

It will be obvious from the description of the ap aratus that the heating is'e'fi'ccted through the agency oi steam and hot Water combined, and this continues until the radiator is entirely filled. 3y reason of the large size of the radiator ordinarily used in cars, the complete filling ot' the radiator circuit seldom it ever takos place during the run, so that the apparatus is always eiiect'ivev in unusual cases, howcvcr, where the circuit is filled with condensation, the latter be blown out of the radiatorin the same manno r as the air as previously set forth.

In Fig. 2 of the drawings 1 have shown a modified form of valve indicated by the reference-letter l for the connection F of The valve in the dis- 7 the flap type, comprising a main stem h, a A

swinging flap member 2' constituting the val proper, pivoted to the casing and car. n a laterall roectin section or u b J 3;)

finger j controlled by the stem It.

From the foregoing description oi the 1. In a heating system, the combination with a radiator, of means for retaining the condensatlon therein, and a steam supply pipe communicating with the radiator at;

substantially its lowest point whereby the incoming steam and its water of condensation will heat by convection substantially all of the accumulated water of condensation during all the time the radiator is filling with said condensation.

2. In a heating system, the combination with a radiator, of a steam supply pipe com.-

' municating with the radiator at its lowest point, means for permitting air to be exausted from the radiator, and a checkvalve associated with the supply pipe serving to prevent the escape of water of condensation. and to permit free entry of the steam to replace the condensed steam.

3. In a heating system, the combination with a radiator, having a steam inlet port at substantially its lowest point and intermediate its ends, oia steam supply pipe communicating with the inlet port and adapted to discharge steam within the radiator to both sides of the inlet, and means controlling the inlet acting automatically to permit entry of the steam and to prevent the escape of accumulated water of condensation.

4. In a heating system, the combination of a radiator having pipes inclined from opposite directions to a common point, means for retaining the condensation within the radiator, and a steam supply pipe communicatmg with the radiator at substan tially its lowest point, whereby the entering steam or its water of condensation is free to go both ways toheat the collected condensation.

5. In a heating system for cars, the combination with a radiator, consisting of a closed loop section having a portion or portions inclined downwardly for the drainage of condensation, of a valve-controlled steam supply pipe communicating with the radiator loop at substantially its lowest point, a normally closed valve controlled discharge pipe for and communicating with the radiator in proximity to the supply pipe, and a check-valve associated with the supply pipe and acting to prevent the discharge of condensation therethrough.

6. In a heating system for cars, the combination with a closed radiator circuit, of a valve controlled steam supply pipe communicating with said circuit at substantially its lowest point, a normally closed valve controlled discharge pipe also communicating with the radiator, a valve in the=circuit intermediate the supply and discharge pipes, and a check-valve in the radiator circuit acting automatically to prevent the escape of condensation.

7. In a heating system, the combination with a closed radiator circuit, of a valvecontrolled steam supply pipe communicating with said circuit atsubstantially its lowest point, a normally-closed valve-controlled discharge pipe also communicating with said radiator, a valve in the circuit intermediate the supply and discharge pipes, and automatic means for retaining condensation within the radiator and admitting steam through the condensation.

In testimony whereof I affix my signature in. presence of two witnesses.

THOMAS PARKER. 

